Quantum fluctuations of chiral condensate in the analytically regularized Nambu--Jona-Lasinio model
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
The problem of quantum fluctuations of the chiral condensate due to next-to-leading contributions is investigated. Meson contributions to the chiral condensate are calculated in the Nambu--Jona-Lasinio model with the analytical (dimensional) regularization in a framework of the mean-field expansion. The pion contribution can be significant, while the sigma-meson contribution is small in the regime of physical values of the model parameters. Non-pole contributions are also estimated and found to be small.
Keywords
Cite
@article{arxiv.hep-ph/0312004,
title = {Quantum fluctuations of chiral condensate in the analytically regularized Nambu--Jona-Lasinio model},
author = {V. E. Rochev},
journal= {arXiv preprint arXiv:hep-ph/0312004},
year = {2007}
}
Comments
5 pages, no figures, Talk given at XVII International Workshop on High Energy Physics and Quantum Field Theory (QFTHEP'2003), Samara--Saratov, 4-11 Sept. 2003